animation doesn't move.

The model does not move with animation.
It works fine when weight painting.
What is the cause?The model does not move with animation.
It works fine when weight painting.
What is the cause?

The cause: something hasn’t been done that should have been done OR you did something that you should not have done.

Either way, with this little (almost no) information no one can help you.

We need a description of what exactly doesn’t work (animated object position not changing, bones not moving, something wrong with the nla, … ), how you would like it to work, some images with and preferably a *.blend file.